defibrillator

noun

de·​fi·​bril·​la·​tor (ˌ)dē-ˈfi-brə-ˌlā-tər How to pronounce defibrillator (audio)
: an electronic device that applies an electric shock to restore the rhythm of a fibrillating heart
defibrillate transitive verb
defibrillation noun

Examples of defibrillator in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Eriksen is revived with a defibrillator and the game controversially continues with a 1-0 Finland win. Assistant Sports Editor, Los Angeles Times, 12 June 2026 Eriksen was fitted with an implantable cardioverter defibrillator (ICD) — a type of pacemaker — following his cardiac arrest, per BBC Sport. Kirsty Hatcher, PEOPLE, 8 June 2026 Italian health regulations prohibited players from playing with the implantable cardioverter defibrillator. ABC News, 8 June 2026 He was resuscitated on the pitch back then in Copenhagen and made a full recovery, returning to the sport after having an implantable cardioverter defibrillator fitted. Ben Church, CNN Money, 8 June 2026 See All Example Sentences for defibrillator

Word History

First Known Use

1952, in the meaning defined above

Time Traveler
The first known use of defibrillator was in 1952

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Cite this Entry

“Defibrillator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/defibrillator. Accessed 17 Jun. 2026.

Medical Definition

defibrillator

noun
de·​fi·​bril·​la·​tor (ˈ)dē-ˈfib-rə-ˌlāt-ər How to pronounce defibrillator (audio) -ˈfīb- How to pronounce defibrillator (audio)
: an electronic device used to defibrillate a heart by applying an electric shock to it

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